$OpenBSD: patch-shell_source_unix_exec_shellexec_cxx,v 1.5 2016/09/04 12:02:49 robert Exp $
--- shell/source/unix/exec/shellexec.cxx.orig.port	Fri Jul 29 00:11:19 2016
+++ shell/source/unix/exec/shellexec.cxx	Sat Sep  3 16:55:20 2016
@@ -198,7 +198,7 @@ void SAL_CALL ShellExec::execute( const OUString& aCom
     }
 
     OString cmd =
-#ifdef LINUX
+#if defined(LINUX) || defined(__OpenBSD__)
         // avoid blocking (call it in background)
         "( " + aBuffer.makeStringAndClear() +  " ) &";
 #else
